I don't mind shows getting cancelled. The only issue I have is that most networks don't give most the producers of the shows the opportunity to wrap up their shows. Listen, if a shows has low ratings and they cannot get the advertising dollars necessary to keep that show on, then they have to do what they have to do. They should make the decisions on things like this, earlier and let the producers wrap up their shows.
The only show that I really was upset that they cancelled after one season is Journeyman.